Stopping mechanism for narrow ware looms



June 23, 1931. E. R. HOLMES STOPPING MECHANISM FOR NARROW WARE LOOMS 2Sheets-Sheet 1 Filed July 9, 1930 LTMT m. m M m i- AU a a r c r a m a aE mi l \00 .J k O) l- 1 "4 7 NN a l l lhlu \l n v mm m MM M 5 wm m law pMu m9 Q mm 5 a 00 J om m w ,o A! M w r M 0U TU 90 my #0 Qw w wwJK/l/EN-TUR 4 55705: EH41 5 June 23, 1931. E, R, HOLMES 1,811,432

STOPPING MECHANISM FOR NARROW WARE LOOMS Filed- July 9, 1930 2Sheets-Sheet 2 17v, 1/E/v 7-0)? 5L BR/UGL' R. HUL M55 1 77" UFP/VE Y5Patented June 23, 1931 UNITED STATES PATENT OFFICE ELBRIDGE R. HOLMES,OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO GROMPTON & KNOWLES LOOM WRKS,OFWORCESTER, MASSACHUSETTS, A CORPORATION OF I improvements;

- MASSACHUSETTS Application filed July 9,

This invention relates to narrow ware looms and particularly tomechanism for stopping a narrowfware loom. In my prior application,Serial No. 153,369, filed May 17, 1930, I have shown adevice fordisconnecting or disabling the shuttle driving mechanism in a narrowware loom when normal movement of the shuttles is prevented. Withtheprior construction, however, all other parts of the loom mechanismcontinued in operation until the loom was stopped by the weaver.

It is the object of my present invention to provide means by which theentire loom will be stopped when the shuttle drive is dis a'bled, sothat no unnecessary or useless operation of the loom may occur.

. My invention further relates to arrangements and combinations of partswhich will be hereinafter described and more particularly pointed out inthe appended claims.

A preferred form of the invention shown in the drawings, in which Fig. 1is a frontelevation, partly in section, of portions of a loom embodyingmy Fig. 2 is a sectional end elevation of certain'parts, looking in thedirection of the arrow 2 in Fig. 1; v

Fig. 3 is a front elevation of certain parts shown in Fig. 1 but in adifferent position, and r Fig. 4 is an end View of certain parts shownin Fig. 2, also in a different position.

Referring to the drawings I have shown parts of a narrow ware loom ofcommercial construction and comprising a loom frame 10 in. which a lay11 'is mounted to swing forward and rearward. The lay is support ed uponthe usual-swords 12 having hub portions 13 at their lower ends securedto sleeves 15 pivotally 'mounted in bearing brackets 16 secured to theloom frame A rack bar 17 is mounted for reciprocating movement on thelay lland actuates pinions (not shown) by which" .the narrow ware Yshuttles are moved back and forth across the different strips of fabric.

1930. Serial no. 466,660.

cured to lower sprockets 20. A second and smaller sprocket 21 is securedto each lower sprocket 20, the sprockets 20 and 21 rotating in unisonabout pivot studs 22 in brackets 23 formed on the ends of the sleeves 15which support the lay swords 12. Additional chains 25 connect thesmaller sprockets 21 to the ends of a pull rod 26, the chains and pullrod 26 being slidable substantially in alignment with the axis of thesleeves 15.

A diamond-shaped member or frame 30 (Fig. 3) is slidable on fixed guiderods 31 and is provided with vertical flanges 32 on its rear face,forming a guideway to receive a crankpin 33 on a continuously'rotatingcrank arm 34. The crank arm 34: is mounted on a crank shaft 35 which maybe connected by bevel gears 36 to the usual bottom shaft 37 ,of'theloom. As the shaft 35 isrotated, the crankpin 33 moves up and down inthe vertical guideway between the flanges 32 and reciprocates the frame30 on the guide-rod A U-shaped block 40 (Fig. 3) is mounted positionthereon by check nuts 41. The sliding frame 30 has a forward projectionor abutment 42 positioned below the block 40 and having a semi-circularrecess 43 in its upper face.

A disabling connecting member is interposed between the block 40 and theabutment 42. This connecting member comprises two separate elements 15and 46, hinged together at their adjacent ends by a cross-pin 47. Theseadjacent ends are shaped to provide a rounded surface closely fittingthe recess 13 and adapted to turn therein. A cross slide is mounted inguideways 62 in the sliding frame 30. A coil spring 64 is mounted on arod or plunger 65, the lower end of which is secured in a lug 66 formedat the upper end of the cross slide 60. The upper end of the rod slidesfreely in a guide openingin the upper part of the sliding frame 30. Thespring (34 engages nuts 67 on the stud 65 and acts to push the beveledfoot portion 70 of the slide 60 against the top surface of the block 40.Such downward movement is resisted b theconnecting elements45 and 46,which e ements are thus firmly seated at their low er ends in the recess43 and at their upper tinned movement of the frame some abutment 42 willcause the connectingsmembers 45 and 46 to be entirely dislocated, theseparts then falling to porting surface.

the floor or other sups After this occurs, the sliding frame 30 isentirely disconnected from: the pull rod 26 and'n'o furtherQmoVement ofthe shuttles will take. place until the obstruction is removed and theconnecting members are reassembled. e The mechanism thus far describedis substantially as shown in my prior. application, towhich referenc'eismade for a more arm 74 at the rear end of the shaft is connected byalink 75' (Fig. 1) to a stud 76 at the front end of a shipperlever 77.The lever 77Jis pivoted on a fixed bracket 78 and is forked as indicatedat 79 to engage a clutchsleeveor other driving connection at therearendof the shipper lever. Movement ofthe cross shaft 70 is thus'effective to start or stop the loomthrough the action of the shipperlever 77. v An arm 80 (Figs. 2 and 3) is loosely mounted'on the crossshaft 70 and is forked atits lowerend-to embrace a rockshaft 82, mountedin fixed bearings supported by the loom frame and held from endwisemovement therein.

' An arm 83 is fixed to the cross shaft 70 and has an offset finger84positioned for engagement by the arm 80.- ,The lower end of the arm 80is engaged by a collar 85's1ida-ble on the rockshaft 82' and forced tothe left (as viewed in Fig. 1) by a heavy coil spring 86, also mountedon the rock shaft 82 and abutting a collar 87thereon.

When the arm 80 is free to be moved by arm fixed to the rock shaft 82.

the spring 86, it engages an offset finger 84' of'the arm 83 and swingsthe rock shaft 70 to release the clutch through which the loom isdriven. Such movement of the arm 80 is normally prevented, however, byen gagement .of a lug 88 on the side of the arm 80 with the end of anoffset finger 89 on the The rock shaft 82 also has a pair of arms 93fixed thereto and supporting a contact bar 94,

which extends lengthwise of and parallel to the rock shaft 82 and whichoverlies the 7 upper end'of the sliding'rod ,or plunger 65 previouslydescribed.

The operation of my improved stopping mechanism is as follows Y Whenmovement of the shuttles is interrupted aspreviously described and oneof the .connecting'member 45 or 46 is moved to the position shown inFig. 3, this action causes an upward sliding movement of the crossslide60 and a corresponding upward movementfof the plunger 65. Theplunger underlies the contact bar 94 in every position of the plungerand the upwar'dmovej ment of the plunger forces the bar upward andcauses a'corresp onding rocking movement of the rock, shaft 82. Suchmovement roclrs'the finger 89 of the arm 90 out of engagement with thelug onthe side .of the forked arm, 80 and permits the arm80 to movefreely from the position shown in Fig. 1 to that'shown in'Fig. 3. Suchmovement is communicated throughthe arm 83 I to the cross shaft 70,releasing the clutch and stopping the m. I have thus providedoperativeiconnec 'tions between the shuttle releasing devices -and the100m stopping mechanism, such that the loom will stop whenevernormalmovement 'of theshuttles is prevented. I t will be further evidentthatthe. connection from the hand rail 72to the loomstopping mech-vanism is such that the 100m may be stopped by hand at any, time withoutinterfering with the automatic, connections. I Having thus described myinvention and the advantages thereohl do not wislrto be limited to thedetails herein disclosed, otherwise than as set forth in the claims, butwhat I claimis:f I Q 1 In a narrow ware loom, shuttle reciproeatingdevices, actuating ,mechanism there for, a ,yieldable driving connectionbetween said mechanism and said 7 devicesasaid connect ng member beingdisplaced if normal for, a disabling connecting member between movementof said shuttle reciprocating devices is prevented, and means forstopping the loom, said latter means being rendered operative by saidconnecting member as it is I displaced.

3. In a narrow ware loom, shuttle reciprocating devices, actuatingmechanism therefor, loom stopping mechanism, a connecting membernormally inoperative with respect to said stopping mechanism, andconnections through which displacement of said connecting member renderssaid stopping mechanism operative to stop the loom.

4. In a narrow ware loom, shuttle reciprocating devices, actuatingmechanism therefor, loom stopping mechanism, a connecting membernormally inoperative with respect to said stopping mechanism, aspring-pressed plunger normally holding said member in connectingposition, and a device engaged by said plunger and effective to releasesaid stopping mechanism when moved by said plunger upon displacement ofsaid connecting member.

tion of said 5. The combination in a narrow ware loom as set forth inclaim 4', in which the spring pressed plunger is reciprocated with theshuttle reciprocating mechanism and in which said plunger is effectivelyoperative as to the stopping mechanism in every posiplunger. 6. In anarrow Ware loom, shuttle actuating mechanism, loom stopping mechanism,a givewayconnection in said shuttle actuating mechanism, and means torelease the loom stopping mechanism, said releasing means being renderedoperative by abnormal movement of said giveway connection uponprevention of normal operation of the shuttles.

7 In a narrow ware loom, shuttle actuating mechanism, loom stoppingmechanism, a giveway connection in said shuttle actuating mechanism, anda knock-oil device for said loom stopping mechanism, rendered operativeby abnormal movement of said give- Way connection upon prevention ofnormal operation of the shuttles.

In testimony whereof I have hereunto aflixed my signature.

ELBRIDGE R. HOLMES.

